Flush valve



Feb. 12, 1935. KELSO 1,991,100

FLUSH VALVE Filed Aug. 12, 1930 Howard E K9150. 33%;; MA abtovnu Patented Feb. 12", 1935 Q QEL 1 a FLUSH viewe a A Howard F. Kelso; Houston, Tex., assignor to The Beaton V861 Cadwell Manuiagturing Company, New Britain,- Conn,- acorporation oi" Connecticlit This "invention relates to valves"; andimore p articularly' to a flushing valve which will produce the same period of flush irrespective of the length of time the actuating handle is pressed :down. H 1

One object of the invention isj'toprovidea flush valve of the above nature which will dc live! only a single 'flush'even though the 'jacth'at ing handle islheld down continuously or is operY-i A further objectis 'toprovide a' flush valve of the above nature which will be simple in constructiori, inexpensive to manufacture, easy to install and manipulate, toolproof, compact" ornamentalf-in appearance, and very eiiicfent'and durable in use.

"With these and other objects in view there has been illustrated on the accompanying drawing one form' in which the invention may becon- 20" venientlyernbodied in practice.

In the drawingz I Fig; 1 represents-a vertical side sectionalview ofa fiiish valve embodying the" invention.

Fig, 2 5 is-a side view of the"flushv'alve, shown on a" somewhat reduced scale.

Referring no'wto the drawing in" whichl like reference numerals denote corresponding parts throughout the several views, the numeral 105 indicatesthebodymember of the flush valve hav 301 mg a horizontal side inlet portllandavertical b'ott'om outlet port '12. The side inletport ll'is' adapted tobe connectedto'a waterfsupply pipe,

not sh'own,"bymeansof a pair of cooperating coupling members 1 3 and 14.

The "top of the "outlet'portlz terminates in a;

thin" annular ri'rn i 'rm 'n a $3117 for a b il low main valve consisting of an upper Secti mend a! lower secticn 17;" the" latter being pro vided" with a plurality of vertical guidingvane's" 4c 18- adapted toslidablyfit' withihthe outlet port" 12. Thelower-sec'tion' 17 of themainvalveha's'f a flat base '18a protided "with acentral-aperture 191113011 which rests; a rubber gasket-i 20 forming a seat rermeheeegz e a release valvejjanjd 45 depending from, said head 21 1is a normally Vr-r tical rod" 22. The rod,2 2is located in aliner'iient' with afhorizontal actuating rod zaflrer ieg part of the valve operating mechanism; The rod 23: terminates at its outer'endin an enlarged pistqnj24 which is adapted to'slide infa cylinder 25 in a laterally extending projebtion 25d of V the body member 10, Thelpiston' 24' is 'adap'ted to" b eiengaged by the tiltahle head'25b of an opr ati handle "26 l ri rma iy lying are? herizentm fiw gitien; asshown in Fig. 1. The inner s'ideof" sectiony32a which is adapted to be held tightly:

12A The outer horizontal edgeof said diaphragm said piston,24is' engag ed bya coiled springi26a located within the cylinder 25 surrounding said rod 23; 'I'hehead 25b isfloc'atedin an adjust- V able recess26b and is held in place byanIihturned flange 260 formed on a cap member 26d 5 screwed upon'the outside of said side' projection 26a. By means of this construction, it will be seen that. when the handler 2 6ris swung in any directiomthe head 25b will tilt' the recess 26b a nd cause the piston. 24 to slide inwardly, rocking the depending rod 22 upwardly and to theIright, as shown in Fig'. 1. This action will raise the head 2i of thelreleasevalve of of its; seat and let out asmall quantity of water from the interior 27 of themain valve, which space 15 will be hereinafter termedthe frelease chamber; The upper section l6 of the main valve is threaded at its lower end so that it may be screwed into the upper end of-the lower section;

17. The upper section 16, has a horizontal flange 28 at its top, the edgec29 of Whichis threaded;

between the upper andlower sections 16 and 17 of the main valve, and will rest upon the top of theriih l5 fornorinally closingthe outlet port 32'is held rigidlyupon a verticalthreaded upper rim i'33 ojf the body memberlO by means of a; cover. member 34 having a depending annular;

flange 3 4a crewe upon said rim as.

L The top "of the control chamber 31 is closed by alcurved-dome. 35 preferably constructedtof upon a metal washer 37. The dome flange 36A and vthe'washer 37 are adapted; to be tightly clamped upon the outer edge of'thediaphrag'in 5 32 by the cover member 34" which preferably has a hexagonalnut'section38 upon its top for convenienceflin manipulation.

In order" to provide means tor producing a single fiked-period flush irrespective of the lengthhf time" theactuatin'g handle 26 may be held down;-or even if thejQvalve isactuatedsev eraltimesinquick-succ'ession, provision is made of a-check valvej39r As clearlyshown-inEigi' 1, said check valve 39" isfadaptedto be forced v 507 ber 31.

down upon the top of the main valve by striking the dome when the main valve is fully open. The release chamber 27 of the main valve will thus be closed and further escape of water from the control chamber will be prevented.

The check valve 39 has a depending section 40 located in the release chamber 27 of the main valve. The dependingsection 40 has a lower reduced end 41 surrounded by a coiled spring 42, the lower end of which fits around a lug 43 on the top of the release valve head 21. The spring 42 is adapted to normally hold the check valve 39 in the raised position shown in Fig. 1. H

The check valve 39 has a horizontal upper disc section 44, the underside of which is provided with an annular inclined rib 45 adapted to seat upon a circular gasket 46, preferably constructed of rubber. A small bleed groove 45a is preferably formed in said rib for a purpose to bedescribed later. The gasket 46 is held upon the upper top section 16 of the main valve by a flanged ring'member .47 screwed upon the outer threaded edge 29 of the flange 28.

For permitting the rise of the main valve to be adjusted, provision is made of a button member 48 having a depending threaded shank adapted to be screwed into the central part of the check valve 39. i

In order to restore the pressure in the control chamber 31 after the flush valve has been operated, provision is made of a rotary bypass plug 49, the operation of which is fully described in the previous patent to Cadwell and Ott,No. 1,657,817. The rotary plug 49 has a-central' horizontal passage 50 communicating with the main chamber '30 and a-- vertical passage 51 adapted to be selectively joined to'a vertical passage 52 in the body member 10. The vertical passage 52 is provided at its upper end with an enlarged circular cavity 53, above which is a small tubular member 54 within which a ball check valve 55 isseated. The ball check valve 55 serves to prevent backsiphonage in case the pressure in the inlet pipe should fall below normal, but does not interfere with the action of the bypass... The tubular member 54 has a side aperture 56 at its top edge located in alinement with a horizontal passage57 in the washer 37:

leading into the interior of the control cham- 1 O e on Whenever it is desired to operate the flush valve, the handle 26 will'be rocked in'any desired direction, causing the piston rod 23 to 1y oif of itsseat and will open communicationv between the inlet port 11 and the outlet port 12;

The main valve will be guided within the outlet port 12 while risingto open position by the vanes 18 and will force the check valve 39 upwardly until the adjustable button 48' on the top. thereof strikes the dome 35 covering the control chamber 31. The annular rib-45 on the bottom of the check valve disc 44 will thus be caused totightly press down upon the gasket 46 on the top of the main valve, thereby closing the release chamber 27 therein and preventing further escape of water from the control chamber 31.

The main valve will remain raised to permit the flow of the flushing stream until the pressure in the control chamber 31 has been restored to normal by the slow leakage of water thereinto from the main chamber 30 through the bypass. Since the pressure in the two chambers will then be equalized, the main valve will be caused to close due to its weight and the resiliency of the rubber diaphragm 32. The flushing stream will be thereby shut off.

After the closing of the main valve, the'check valve will remain seated upon the top of the main valve so long as the release valve 21 remains open. When the operating handle 26 is released, the release valve 21 will be restored to its seat and the slow leakage of water from the control chamber 31 to said release chamber through the bleed groove 45a on the under side of the rib 45 will permit the spring 42 to'force the check valve. 39 upwardly to its original normal position.

While there has been disclosed in this specification one form in which the invention maybe embodied, it is to be understood that'this form isshown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosure but may be modified and embodied in various other forms without departing from'its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claims.

Having thus fully, described the invention what is claimed as new and for which it is desired to secure Letters Patent is:

1. In a flush valve, a fmain chamben a ported means carried by and connected with said main valve for closing said release chamber when said main valverises, and a by-pass for slowly restoring the pressurein said control chamber to permit said main valve to close autor matically after a fixed interval of time. 7

2. In a flush valve, a main chamber, a control chamber, a main valve separating said chambers, said main valve being hollow and normally having open communication with said control chamber, a release valve in the bottom of said main valve for permitting the escape of'water' from said control chamber when the flush valve is actuated for. causing the main valve to rise, a check valve located'in said control chamber and carried by said-main valve, and adapted to strike the top of said control chamber to close said'communication when the main Valve rises, thus preventing further escape, ofwater from the control chamber, and a by: pass connecting said chambers to slowly restore the pressure in said control chamber and permit said main valve to close.

,3. In a flush valve, a main chamber, a con trol chamber; a main. valve separating said chambers, said main valve being hollow and nor mally having open communication with said. control chamber, a releasevalve in the bottom of said main valve for permitting the escape of water from said control chamber when the flush valve is actuated for causing the main valve'to rise, a check valve located at the top of said main valve, a coiled spring in said main valve and seated on said release valve, said check valve resting on said spring and normally held above said main valve andadapted to close said communication when the main ,flush valve is actuated for causingthe main valve to rise, a check valve located at the top of said main valve, a coiled spring in said main valve, said check valve resting on said spring and normally held above said main valve and adapted to close said communication when the main valve rises, thus preventing further escape of water from the control chamber, and a by-pass connecting said chambers to slowly restore the pressure in said control chamber and permit said main valve to close.

5. In a flush valve having a main chamber,

a control chamber, a by-pass,,a flexible main valve separating said chambers" and being adapted to control the flow of a flushing stream from the inlet to the outlet of said flush valve, said main valve having a central passage provided at its bottom with a release valve and carrying upon its top a check valve, actuating means to open said release valve to permit said main valve to rise, said check valve being, forced against the top of said control chamber by the rising of the main valve to permit water to flow through said by-pass and slowly restore the pressure in said control chamber to cause said main valve to close, said check, valve having a depending guide and a spring surrounding said guide for pressing said release valve upon its seat. I 1

6. In a flush valve having a main chamber, a control chamber, and a, by-pass, a flexible main valve separating said chambers and being adapted to control the flow of a flushing stream from the inlet to the. outlet of said flush valve,

said main valve having a central passage provided at its bottom with a release valve and at its top with a check valve, and actuating means to opensaid release valve to permit said main valve to rise, said check valve being forced against the top of said control chamber by the rising of the main valve to permit water to flow through said by-pass and slowly restore the pressure in said control chamber to cause said main valve to close, said checkvalve having an adjustable upper button to'permit the 'time of closing of the check valve to be varied.

7. In a flush valve having a. main chamber, a control chamber, a by-pass, a flexible main valve separating said chambers and being adapted to control the fiow'of a flushing stream from the inlet to the outlet of said flushvalve, said main valve having a central passage provided at its bottom with a-relea'se valve and at its top with a check valve, and actuating means to open said release valve to permit said main valve to rise, said check valve being forced against the,

top of said control chamber, by the rising of the main valve to permit water to flow through said by-pass and slowly restorethe pressure in said control chamber to cause said main valve 'to close, the check valve on the main valve hav ing an outstanding disc section provided with an annular, rib on its lower surface to form a seat for the main valve, said rib having a narrow bleed groove to 'permit slow leakage of water past, saidrib.

8, In a flush valve having a main chamber, a control chamber, a by-pass, a flexible main valve separating said chambersand being adapted to control the flow of a flushing stream from the inlet to the outlet of said flush valve, said main valve having a central passage provided at its bottom with a release valve having a depending rod and carryingat its top a check valve, and

actuating means in alinement with said rod to open said release valve to permit said main valve to rise, said check valve being forced against the top of said control chamber by the rising of the mainfvalve to permit water to flow through said by-pass and slowly restore the pressure in said control chamber to cause said main valve to close, said checkv valve having a depending guide and a spring surrounding-said guide for pressing said release valve upon its seat. I I 9. In a flush valve, a main chamber, a control chamber, a movable main valve separating said chambers, said main valve having an interior release chamber, a valve in the bottom of said chamber adapted when open to release a small quantity of liquid from said release chamber to reduce the pressure in said control cham- I berand cause the main valve to rise and start the flushing stream, a check valve carried by said main' valve and adapted, to be forced against the top of said control chamber by the rising of said main valve for closing said release chambenfand a by-pass for slowly restoring the pressure in said control chamber to permit said main valve to close automatically after a fixed interval of time, said by-Dass having an en,- larged cylindrical chamber, a tubular valve plug seated in said chamber and having a ball seated on the top thereof, the bottom of said plug leading to said main chamber and the top leading to said control chamber.

10. In a flush valve, a casing, a dome-shaped detachable cover therefor, a movable main valve dividing said easing into a main chamber and a control chamber, means to release a small quantity of liquid from said control chamber to cause the unbalanced pressure in said 'main chamber to unseat saidmain valve and start the flushing stream, a by-pass for connecting said main chamber with said control chamber, and for slowly restoring the pressure in said control chamber to normal automatically at a predetermined time after said releasing means has ceased to operate, whereby said main valve will close, said by-pass including an enlarged cylindrical chamber, a tubular removable valveplug seated inthe bottom of said cylindrical chamber and having a restricted lower seat, and a ball'valve resting upon said seat for preventing back siphonage in case the pressure in the inlet pipe should fall below normal, said plug having a side slot in its upper portion leading laterally into said controlchamber, said plug being held in place by said cover.

HOWARD F. KELSQ. 

